Color #21200D Color / Colour Code #21200D
This page shows the hex color code for color #21200d (#21200D). The colour is a yellow tone with 43% saturation and 9% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #21200D against common backgrounds.
Complementary Colors
#21200D paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 27, 57, and 87 degrees for harmonious combinations.
Triadic Palette
Three colors at 57, 177, and 297 degrees.
Color Palettes Using #21200D
Five shades at lightness levels 15% through 85% while keeping hue at 57 and saturation at 43%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 57 to 102 degrees create a warm, unified palette. This analogous scheme works for marketing materials, seasonal campaigns, and any design that needs visual warmth without clashing colors.
Combines the base color at hue 57 with its complement at 237 and two adjacent cool tones. This split-complementary approach provides strong visual contrast while remaining more balanced than a pure complementary scheme.
Five evenly spaced hues at 40% saturation and 80% lightness. Pastels are gentle on the eyes and work well for dashboards, onboarding screens, category tags, and any interface where multiple distinct colors are needed without visual aggression.
Shades & Tints of #21200D
Lightness variations at hue 57 and 43% saturation.
CSS Gradients with #21200D
Design Use Cases for #21200D
Balanced UI Color
At 43% saturation, #21200D strikes a balance between vibrancy and restraint. This makes it versatile for primary UI elements like navigation bars, card headers, and form accents. It draws attention without overwhelming adjacent content.
Dark Mode Background
At just 9% lightness, #21200D works as a dark mode background or overlay color. Dark backgrounds reduce eye strain in low-light environments and make bright accent colors pop. Pair with light text (minimum 4.5:1 contrast ratio) for readability.
Attention & Optimism
#21200D is in the yellow spectrum (hue 57). Yellow attracts attention faster than any other color. Use it for warning labels, featured content markers, star ratings, and tooltip backgrounds. Pair with dark text since yellow often fails contrast checks against white.
Gradient Pairing
Create a gradient from #21200D (hue 57) to its complement at hue 237. For a subtler effect, try pairing with an analogous color at hue 87. Use CSS: background: linear-gradient(135deg, #21200d, #0d0e21);
CSS Code for #21200D
Similar Colors
Colors visually similar to #21200D based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #21200D across image editing and color design tools.
About Color #21200D (#21200D)
#21200D is a yellow color (colour) with RGB channel values of 33 red, 32 green, and 13 blue. The red channel is dominant by a ratio of 2.5:1 over the weakest channel. In HSL terms, the hue sits at 57 degrees with 43% saturation and 9% lightness, placing it in the warm range of the colour spectrum.
The perceived brightness of #21200D is 30/255 using the ITU-R BT.601 luma formula (0.299R + 0.587G + 0.114B). This appears dark to the human eye, so pair it with light text for adequate readability. For print production, the CMYK equivalent is 0% cyan, 3% magenta, 61% yellow, and 87% key (black).
The WCAG contrast ratio of #21200D against white is 16.44:1 and against black is 1.28:1. This exceeds the AAA requirement (7:1) for normal text on white, making it excellent for body text and small UI labels on light backgrounds.
The complementary colour #0D0E21 creates maximum visual tension when paired with #21200D. For more harmonious color combinations, use the analogous colours #21160D and #18210D, which sit 30 degrees on either side of the hue wheel. To build a complete design system, start with the monochromatic scale above for consistent shade variations, then add one complementary or triadic accent for interactive elements.
How to Explore Color #21200D
- Enter your color value in HEX format.
- The tool converts it to RGB, HSL, CMYK format in real time.
- Copy the converted value to your clipboard.
What is HEX to RGB, HSL, CMYK color conversion
Converting from HEX to RGB, HSL, CMYK translates a color value between two different color models. Different color models are used in web design (HEX, RGB), print (CMYK), and color theory (HSL, HSV).
Related Tools & Colors
Frequently Asked Questions
- What color / colour is #21200D?
- #21200D is Color #21200D, a yellow color (colour) with RGB(33, 32, 13), HSL(57, 43%, 9%), and CMYK(0%, 3%, 61%, 87%). Its perceived brightness is 30/255.
- Is #21200D accessible for text?
- Against white, #21200D has a contrast ratio of 16.44:1 (passes AA for normal text). Against black, it has 1.28:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #21200D?
- The complementary colour is #0D0E21 (hue 237). For subtle color combinations, use analogous colours #21160D and #18210D. The triadic palette adds #0D2120 and #200D21 for vibrant variety.
- How do I use #21200D in CSS?
- Use any format: color: #21200d; or rgb(33, 32, 13); or hsl(57, 43%, 9%). For CSS custom properties: --color-primary: 57 43% 9%; then use it as hsl(var(--color-primary)).
- Is this color / colour explorer free?
- Yes, completely free with no signup required. All colour calculations run in your browser. You can explore any valid hex color code, not just the pre-generated palette.